Navigation Hover/Current Background Color & Twitter Question

I am building on MAMP so I cant give an URL.
I am trying to change the background light grey color on the navigation, in this case I am using the brand nav.
I have tried adding this to my child theme:
#brandnav ul li a:hover {
background: none;
}
But it does not work...I can change the color but not remove it, I have also tried transparent with no luck?
Another thing is at one point in the pagelines back end I could add a twitter bar that ran across the bottom of the page, I cant seem to find it anymore!?
Thanks in advance

A CSS plugin for the menu will be released to the store soon. Just waiting for it to be approved. This will easily solve your menu CSS issues.
The twitter bar is there. You need to add it in the Templates settings.

Can you give a screenshot of the twitter issue?
The Store plugin is coming soon.. trust me, I'm as anxious as you.
Let me know what exactly you need changed. BG color on normal state or hover?
PS background: none isn't a color. You need to use transparent instead.